sunxi: Add DRAM_SUN8I_A83T kconfig entry

Add proper and simple kconfig option for dram_sun8i_a83t.c
instead of using MACH type on Makefile.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/mach-sunxi/Kconfig

@@ -30,6 +30,12 @@ config DRAM_SUN8I_A33
 	  Select this dram controller driver for Sun8i platforms,
 	  for A33 SOC.
 
+config DRAM_SUN8I_A83T
+	bool
+	help
+	  Select this dram controller driver for Sun8i platforms,
+	  for A83T SOC.
+
 config DRAM_SUN9I
 	bool
 	help
@@ -196,6 +202,7 @@ config MACH_SUN8I_A33
 config MACH_SUN8I_A83T
 	bool "sun8i (Allwinner A83T)"
 	select CPU_V7
+	select DRAM_SUN8I_A83T
 	select SUNXI_GEN_SUN6I
 	select MMC_SUNXI_HAS_NEW_MODE
 	select SUPPORT_SPL

arch/arm/mach-sunxi/Makefile

@@ -37,8 +37,8 @@ obj-$(CONFIG_DRAM_SUN4I)	+= dram_sun4i.o
 obj-$(CONFIG_DRAM_SUN6I)	+= dram_sun6i.o
 obj-$(CONFIG_DRAM_SUN8I_A23)	+= dram_sun8i_a23.o
 obj-$(CONFIG_DRAM_SUN8I_A33)	+= dram_sun8i_a33.o
+obj-$(CONFIG_DRAM_SUN8I_A83T)	+= dram_sun8i_a83t.o
 obj-$(CONFIG_DRAM_SUN9I)	+= dram_sun9i.o
-obj-$(CONFIG_MACH_SUN8I_A83T)	+= dram_sun8i_a83t.o
 obj-$(CONFIG_SPL_SPI_SUNXI)	+= spl_spi_sunxi.o
 obj-$(CONFIG_SUNXI_DRAM_DW)	+= dram_sunxi_dw.o
 obj-$(CONFIG_SUNXI_DRAM_DW)	+= dram_timings/